• Input the ingredients for person 1 from a list of over 25 toppings.
• Add another person and repeat until you are done.
• Click on calculate.
• Select how much pizza each person wants to eat (just to keep things on the safe side-specially with Gizmodo readers in Gizmodo Gallery parties-add two extra slices per person).

Click to viewDone. The Pizza Calculator will optimize the ingredients and pizza combinations and give you an ordering list so everyone is satisfied and there are no leftovers (although cold leftovers with Coke the next morning make for a Breakfast of Champions). [The Pizza Calculator]